Cipher questions

• C# equivalent to C `system()` standard library function
• Cannot open database requested by the login. The login failed. Login failed for user
• getline in istream and getline in basic_string
• No matching function call to class member
• Changing brightness of display (C#) [duplicate]
• Make WPF control over the web browser
• Find swapped nodes in a BST
• Generate a new element different from 1000 elements of an array
• Login failed for user 'IIS APPPOOL\Classic .NET AppPool'
• Convert Raw to Wav Streams in NodeJS

Cipher answers